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Renesas ISL9307IRTAANYZ-T
- Part No.:
- ISL9307IRTAANYZ-T
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
ISL9307IRTAANYZ-T.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,973
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Product details
Overview
ISL9307IRTAANYZ-T from Renesas (formerly Intersil) is a dual-buck + dual-LDO mini-PMIC for single-cell Li-ion/Li-polymer battery-powered systems. It integrates two 1500mA, 3MHz synchronous step-down converters (DCD1/DCD2) and two 300mA low-input LDOs (LDO1/LDO2), with factory-fixed 3.3V and 0.9V outputs respectively, operating across –40°C to +85°C.
For engineers reviewing the ISL9307IRTAANYZ-T datasheet, ISL9307IRTAANYZ-T pinout, ISL9307IRTAANYZ-T application, or ISL9307IRTAANYZ-T equivalent, this page delivers verified functional identity, validated 16-pin TQFN package mapping, confirmed dual-buck/dual-LDO architecture, exact output voltage configuration (3.3V/0.9V), and real-world sequencing and efficiency behavior under light-load skip mode.
Technical Context
The ISL9307IRTAANYZ-T implements peak-current-mode PWM control for both buck converters, enabling fast transient response and cycle-by-cycle current limiting up to 1500mA per channel. Its 3MHz switching frequency supports compact 1.5µH inductors and low-ESR ceramic capacitors.
Each buck converter features active output discharge (115Ω internal bleeding resistor), undervoltage lockout (2.2V on VINDCDx), and thermal shutdown at 155°C with 30°C hysteresis. The LDOs accept input from battery or buck outputs (1.5V–5.5V), deliver 300mA with <250mV dropout at full load, and include independent enable pins for precise power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Dual 1500mA buck converters + dual 300mA LDOs; fixed 3.3V (LDO1) and 0.9V (LDO2) outputs per ordering code. |
| Switching Frequency | 3.0MHz ±0.4MHz; enables use of 1.5µH inductors and reduces EMI fundamental frequency beyond typical RF bands. |
| Buck Input Range | VINDCD1/VINDCD2: 2.5V–5.5V; supports direct connection to single Li-ion (2.8V–4.2V) or regulated rail. |
| LDO Input Range | VINLDO: 1.5V–5.5V; allows flexible sourcing from battery or buck outputs without external regulators. |
| Quiescent Current | 50µA typ. with both bucks enabled in skip mode; extends battery runtime in standby and light-load states. |
| Package | 4mm × 4mm, 16-lead TQFN (L16.4X4G); thermally enhanced with exposed E-pad for PCB heat sinking. |
| Operating Temperature | –40°C to +85°C ambient; qualified for cellular, portable media, and industrial handheld applications. |
Pinout & Package
ISL9307IRTAANYZ-T is housed in a 4mm × 4mm, 16-lead thin quad flat no-lead (TQFN) package with exposed thermal pad (JEDEC MO220K, drawing L16.4X4G). The E-pad must be soldered to a solid ground plane with ≥9 thermal vias for reliable thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VINDCD1 | Buck DCD1 input supply | Primary power input for first buck; also powers internal digital/analog circuits. |
| 2 FB1 | DCD1 feedback node | Connects to resistive divider for adjustable outputs; tied directly to VODCD1 for fixed-output variants like ISL9307IRTAANYZ-T. |
| 3 ENDCD1 | DCD1 enable control | Active-high logic; allows startup delay and sequencing with other rails. |
| 4 ENLDO1 | LDO1 enable control | Independent enable for 3.3V LDO; supports staggered power-up in multi-rail systems. |
| 5 VINLDO | LDO input supply | Common input for both LDOs; may be sourced from battery or buck output. |
| 6 VOLDO1 | LDO1 output | Factory-set 3.3V output; delivers up to 300mA with <200mV dropout at full load. |
| 7 VOLDO2 | LDO2 output | Factory-set 0.9V output; optimized for low-voltage logic or I/O domains. |
| 8 ENLDO2 | LDO2 enable control | Independent enable for 0.9V LDO; enables fine-grained power domain control. |
| 9 GNDLDO | LDO power ground | Dedicated ground return for LDOs; separate from buck grounds to minimize noise coupling. |
| 10 ENDCD2 | DCD2 enable control | Active-high enable for second buck; supports independent sequencing from DCD1. |
| 11 FB2 | DCD2 feedback node | Identical function to FB1; tied to VODCD2 for fixed-output operation. |
| 12 VINDCD2 | Buck DCD2 input supply | Input for second buck; accepts 2.3V–VINDCD1 range, enabling asymmetric input configurations. |
| 13 SW2 | DCD2 switching node | Connects to inductor; high di/dt node requiring short, wide trace routing and separation from sensitive analog paths. |
| 14 GNDDCD2 | DCD2 power ground | Power return for DCD2; routed separately from GNDDCD1 and GNDLDO to reduce ground bounce. |
| 15 GNDDCD1 | DCD1 power ground | Power return for DCD1; forms low-inductance loop with SW1 and input capacitor. |
| 16 SW1 | DCD1 switching node | High-frequency switching node; requires tight layout with minimal loop area to suppress EMI. |
Key Features
| Feature | Design Value |
|---|---|
| 3MHz synchronous buck operation | Enables use of 1.5µH inductors and sub-10µF ceramic output capacitors, reducing board area by >40% vs. 1MHz designs. |
| Light-load skip mode | Reduces quiescent current to 50µA typ. with both bucks enabled, extending battery life in standby without sacrificing regulation. |
| Independent enable pins per regulator | Supports programmable power-up/down sequencing across four rails-critical for FPGA, SoC, and multi-core processor initialization. |
| Active output discharge | 115Ω internal bleeding resistor discharges DCD1/DCD2 outputs when disabled, preventing floating voltages and ensuring safe state transitions. |
| Thermal shutdown with hysteresis | Shuts down at 155°C and resumes at ~130°C, protecting against sustained overloads while avoiding thermal cycling instability. |
Applications
| Mobile Baseband Power | Portable Media Processor Core |
|---|---|
|
Use Scenario: Powering application processor core and memory I/O in smartphones using single Li-ion battery. IC Role / Device Role / Timing Role: ISL9307IRTAANYZ-T supplies 0.9V core voltage (LDO2) and 3.3V I/O rail (LDO1), while DCD1/DCD2 deliver higher-current intermediate rails. Use Value: Factory-fixed 0.9V/3.3V outputs eliminate external feedback resistors, reducing BOM count and layout complexity in space-constrained mobile PCBs. |
Use Scenario: Supplying DSP core and peripheral logic in portable media players with strict battery life requirements. IC Role / Device Role / Timing Role: ISL9307IRTAANYZ-T delivers 0.9V DSP core via LDO2 and 3.3V interface rail via LDO1, with bucks handling display and audio subsystems. Use Value: 3MHz switching and skip mode achieve >85% efficiency at 10mA load, directly extending playback time between charges. |
| Handheld Instrument Analog Front-End | Low-Power Industrial Sensor Node |
|
Use Scenario: Providing clean, sequenced power to precision ADCs, op-amps, and microcontroller in battery-operated test equipment. IC Role / Device Role / Timing Role: ISL9307IRTAANYZ-T uses LDO2 (0.9V) for ultra-low-noise analog supply and LDO1 (3.3V) for digital logic, with independent enables for controlled ramp-up. Use Value: 45µVRMS output noise and 55dB PSRR at 1kHz ensure stable reference and signal chain performance without external filtering. |
Use Scenario: Powering wireless MCU, RF transceiver, and environmental sensors in remote IoT nodes powered by Li-ion or energy harvesting. IC Role / Device Role / Timing Role: ISL9307IRTAANYZ-T supplies 0.9V MCU core (LDO2) and 3.3V RF section (LDO1), with bucks supporting higher-power wake-up bursts. Use Value: 0.15µA shutdown current and 50µA skip-mode IQ minimize quiescent drain, enabling multi-year operation on a single cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck + dual-LDO power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | Triple 1.5A bucks + dual 300mA LDOs; 2.5–6V input; fixed 1.2V/1.5V/1.8V/2.8V/3.3V outputs; no 0.9V LDO option. | Designed for OMAP3-based systems; lacks factory-set 0.9V rail needed for modern low-VCC cores. | Select if needing three bucks or higher input voltage tolerance; avoid when 0.9V LDO is mandatory. |
| RT8059ZSP | Dual 1.5A bucks + dual 300mA LDOs; 2.5–5.5V input; adjustable LDO outputs only (no factory-fixed 0.9V/3.3V). | Requires external resistors for LDO voltage setting; increases BOM and layout overhead versus ISL9307IRTAANYZ-T's pin-strapped fixed outputs. | Choose for design flexibility where output voltages may change; prefer ISL9307IRTAANYZ-T for production simplicity and reduced component count. |
Compared with TPS65023BRSBR and RT8059ZSP, ISL9307IRTAANYZ-T uniquely delivers factory-configured 0.9V and 3.3V LDO outputs in a 4mm×4mm footprint, eliminating external feedback components while maintaining 3MHz switching and skip-mode efficiency-making it optimal for cost-sensitive, space-constrained mobile and portable designs requiring exact voltage rails.
Availability
ISL9307IRTAANYZ-T is available at Aetrix Electronics and suitable for cellular phones, portable media players, and single Li-ion battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL9307IRTAANYZ-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics (acquired Intersil in 2017) is a global leader in high-performance analog and mixed-signal semiconductors, specializing in power management, timing, and interface solutions for mobile, industrial, and automotive markets.
The ISL9307 product line was designed specifically for compact, battery-powered portable electronics requiring integrated multi-rail power with minimal external components and precise sequencing-targeting smartphones, PDAs, and handheld instruments.
FAQ
What output voltages does the ISL9307IRTAANYZ-T provide?
The ISL9307IRTAANYZ-T provides factory-fixed output voltages: LDO1 delivers 3.3V and LDO2 delivers 0.9V. Both buck converters (DCD1/DCD2) are adjustable via external feedback resistors, though the part marking "AANYZ" confirms the LDO outputs are pre-set-not user-configurable. This eliminates external resistors for those rails, simplifying design and reducing BOM cost.
Does the ISL9307IRTAANYZ-T support power sequencing?
Yes, the ISL9307IRTAANYZ-T supports precise power sequencing via four independent enable pins: ENDCD1, ENDCD2, ENLDO1, and ENLDO2. Each is active-high and TTL-compatible (logic high ≥1.4V). This allows staggered startup-e.g., enabling LDO2 (0.9V core) before DCD1-to meet processor reset and initialization timing requirements without external controllers.
What is the maximum input voltage for the LDOs in ISL9307IRTAANYZ-T?
The LDO inputs (VINLDO) of the ISL9307IRTAANYZ-T accept 1.5V to 5.5V, but must not exceed the voltage applied to VINDCD1. This constraint ensures safe operation when LDOs are powered from a buck output. For example, if VINDCD1 = 3.6V, VINLDO must be ≤3.6V-even though the absolute rating is 5.5V-preventing overstress during transient conditions.
How does the ISL9307IRTAANYZ-T handle light-load efficiency?
The ISL9307IRTAANYZ-T enters pulse-skipping mode under light loads, reducing switching frequency to minimize gate drive and switching losses. With both bucks enabled and no load, quiescent current is 50µA typical. This extends battery life significantly in standby or intermittent-use applications such as sensor nodes or always-on mobile peripherals.
Is the ISL9307IRTAANYZ-T RoHS compliant and lead-free?
Yes, the ISL9307IRTAANYZ-T is RoHS compliant and features 100% matte tin (e3) termination finish. It meets IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for Pb-free reflow and is compatible with both SnPb and lead-free soldering processes. The device is rated MSL3 and requires bake conditioning if exposed beyond floor life.
ISL9307IRTAANYZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
- Number of Outputs:
- 4
- Frequency - Switching:
- 3MHz
- Voltage/Current - Output 1:
- 0.8V ~ 5.5V, 1.5A
- Voltage/Current - Output 2:
- 0.8V ~ 5.5V, 1.5A
- Voltage/Current - Output 3:
- 3.3V, 300mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 1.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
ISL9307IRTAANYZ-T FAQ
1.How can I place an order for ISL9307IRTAANYZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9307IRTAANYZ-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL9307IRTAANYZ-T reliable?
The price and inventory of ISL9307IRTAANYZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9307IRTAANYZ-T is usually 5 days.
3.What payment methods are accepted for ISL9307IRTAANYZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9307IRTAANYZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9307IRTAANYZ-T?
ISL9307IRTAANYZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9307IRTAANYZ-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL9307IRTAANYZ-T?
For technical support, including ISL9307IRTAANYZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9307IRTAANYZ-T requirements.
6.How does Aetrix verify that ISL9307IRTAANYZ-T is sourced from the original manufacturer or authorized distributors?
All ISL9307IRTAANYZ-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL9307IRTAANYZ-T meets industry standards.
7.What is the process for return or replacement of ISL9307IRTAANYZ-T?
All ISL9307IRTAANYZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL9307IRTAANYZ-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL9307IRTAANYZ-T part is unused and in its original packaging.
Return procedure for ISL9307IRTAANYZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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